Prediction of maximum oxygen consumption from walking, jogging, or running

The purpose of this study was to develop a submaximal, 1.5-mile endurance test for college-aged students using walking, jogging, or running exercise. College students (N = 101: 52 men, 47 women), ages 18-26years, successfully completed the 1.5-mile test twice, and a maximal graded exercise test. Participants were instructed to achieve a "somewhat hard" exercise intensity (rating of perceived exertion = 13) and maintain a steady pace throughout each 1.5-mile test. Multiple linear regression generated the following prediction equation: VO2 max = 65.404 + 7.707 x gender (1 = male; 0 =female) - 0.159 x body mass (kg) - 0.843 x elapsed exercise time (min; walking, jogging orrunning). This equation shows acceptable validity (R = .86, SEE = 3.37 ml x kg(-1) min(-1)) similar to the accuracy of comparable field tests, and reliability (ICC = .93) is also comparable to similar models. The statistical shrinkage is minimal (R(press) = 0.85, SEE(press) = 3.51 ml x kg(-) x min(-1)); hence, it should provide comparable results when applied to other similar samples. A regression model (R =.90, and SEE = 2.87 ml x kg(-1) min(-1)) including exercise heart rate was also developed: VO2 max = 100.162 +/- 7.301 x gender(1 = male; 0 =female) - 0.164 x body mass (kg) - 1.273 x elapsed exercise time -0.156 x exercise heart rate, for those who have access to electronic heart rate monitors. This submaximal 1.5-mile test accurately predicts maximal oxygen uptake (VO2max) without measuring heart rate and is similar to the 1.5-mile run in that it allowsfor mass testing and requires only a flat, measured distance and a stopwatch. Further, it can accommodate a wide range of fitness levels (from walkers to runners).     

Broadcasting and Telecommunications

G.W.A. Dummer's Electronic Inventions: 1745-1976 (Oxford, England: Pergamon Press, 1976—£5.50 or $10.00)

Carl Dreher's Sarnoff: An American Success (New York: Quadrangle/ New York Times Book Co., 1977—$12.50)

George W. Bartlett, ed. NAB Engineering Handbook (Washington: National Association of Broadcasters, 1975—$45.00; $30.00 to NAB and BEA members)

Richard Veith's Talk-Back TV: Two-Way Cable Television (Blue Ridge Summit. Pa.: TAB Books, 1976—$9.95/5.95)

Dan Rather with Mickey Herskowitz' The Camera Never Blinks: Adventures of a TV Journalist (New York: Morros, 1977—$10.00)

F. Gifford's Tape: A Radio News Handbook (New York: Hastings House, 1977—$12.95/6.95)

F. Earle Barcus' Children's Television: An Analysis of Programming and Advertising (New York: Praeger Special Studies, 1977—price not given, but likely around $18.00)

Douglas Davis and Allison Simmons' The New Television: A Public/Private Art (Cambridge, Mass.: MIT Press, 1977—$14.95)

The Videophile's Newsletter (Jim Lowe, 2014 South Magnolia Drive, Tallahassee, Fla. 32301—$7.50 for five issues)

Separations Procedures in the Telephone Industry: The Historical Origins of a Public Policy, by James W. Sichter (January 1977, Publication P-77-2, 146 pp. $23.40, paper)

The Communications Act Policy Toward Competition: The Sound of One Hand Clapping by Hamilton Loeb (March 1977, Working Paper W-77-1, 68 pp., $ 10.90)

Broadcasting: The Next Ten Years (New York: National Broadcasting Co., Department of Corporate Planning, 1977—apparently free on request, paper)

NFLCP Newsletter (P.O. Box 119, Cambridge, Mass. 02142—$7.50 annually, bimonthly; $15.00 to organizations)

Gary Gerani and Paul H. Schulman's Fantastic Television (New York: Harmony Books/Crown Publishers, 1977—$12.95/5.95)     

Playing surface and UK professional rugby union injury risk

Artificial rugby union playing surface installation is increasing. This prospective cohort study aimed to examine the effect of playing surface on match injury types within 157 players of two UK professional rugby union clubs playing 209 matches (96 on artificial surfaces and 113 on grass) over three seasons. There was no difference in overall injury risk between the two playing surfaces with injury incidence on artificial 80.2 (CI 69.9–91.7) and on grass 81.9 per 1000 match-hours (CI 72.2–92.5), with an incidence rate ratio (RR) of 0.98 (CI 0.82–1.17). There was a higher rate of concussion (RR 0.52, CI 0.34 – 0.78) and chest injuries on grass (RR 0.26 CI 0.07, 0.95), and a higher rate of thigh haematoma (RR 2.25, CI 1.05–4.82) foot injuries (RR 4.12, CI 1.10, 15.40) and injury to players being tackled (RR 1.46, CI 1.00, 2.15) on artificial. Whilst there was no higher injury risk for matches played on artificial versus natural grass surfaces, the higher incidence of concussion and chest injury on grass, and the higher rate of foot injuries on artificial surfaces may be related to tackle and footwear-to-surface interface factors.     

The Tech Trajectory: Examining the Role of College Environments in Shaping Students’ Interest in Computing Careers

Research in Higher Education - Computing career opportunities are increasing across all sectors of the U.S. economy, yet there remains a serious shortage of college graduates to fill these jobs....